/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.activiti.security;

import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.context.SecurityContext;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.userdetails.UserDetails;

/**
 * Utility class for Spring Security.
 */
public final class SecurityUtils {

    private SecurityUtils() {
    }

    /**
     * Get the login of the current user.
     */
    public static String getCurrentLogin() {
        return getCurrentUserDetails().getUsername();
    }
    
    public static boolean isCurrentUserAnAdmin() {
        for (GrantedAuthority authority: getCurrentUserDetails().getAuthorities()) {
            if (AuthoritiesConstants.ADMIN.equals(authority.getAuthority())) {
                return true;
            }
        }
        return false;
    }
    
    private static UserDetails getCurrentUserDetails() {
        SecurityContext securityContext = SecurityContextHolder.getContext();
        return (UserDetails) securityContext.getAuthentication().getPrincipal();
    }
}
